US1400015A

US1400015A - Air-heater for internal-combustion engines

Info

Publication number: US1400015A
Application number: US253210A
Authority: US
Inventors: Benjamin B Block
Original assignee: MARY AVERY SCHERFEE
Current assignee: MARY AVERY SCHERFEE
Priority date: 1918-09-09
Filing date: 1918-09-09
Publication date: 1921-12-13
Anticipated expiration: 1938-12-13

Description

B. B. BLOCK AIR HEATER FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED SEPT- 9, 1913.?

1,400,015, .Patentea iiec. 13', 1921;

'B-r M/w rm/my are; STAT-as YPA T NT BENJAMIN B. BLOCK, gOF LOS ANGELES, CALIFORNIA, ASSIGNOR 0F ONEfHALF:xTO MARY AVERY SCHERFEE, 0]? LOS ANGELES, CALIFORNIA.

AIR-HEATER FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent. Patented Dec. 13, 1921,

Application filed. September 9, 1918. Serial No. 253,210.

T 0 all whom it may concern:

Be it known that I, BENJAMIN B. BLOCK, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Air-Heater for Internal-Combustion Engines, of which the following is a specification.

The object of this invention is to provide improved means for heating air passing to the carbureter of an internal combustion engine.

The accompanying drawings illustrate an embodiment of my invention, and referring thereto:

Figure l is a partly sectional front elevation of the air heating means.

Fig. 2 is a section on line22 in Fig. 1.

In the drawing, a designates an internal combustion engine, having an intake pipe or manifold l and exhaust pipes 2. The carbureter b is connected to said air intake pipe and is provided with an air inlet pipe 3, which leads from a pre-heater 0. Said preheater comprises an outer casing 4, an inner casing 5 and an intermediate casing 6.

Outer casing 4 is divided by longitudinal partitions 7 into lower and upper chambers constituting first and second exhaust-receiving chambers, and the lower chamber is provided near one end with an air inlet 8, and communicates at its other end, through a passage 8 with the chamber above the partitions 7, such upper chamber being in communication, at the end remote from the passage 8', with a passage 9 leading to the chamber within inner casing 55. The exhaust pipes 2 communicate with pipes 10 leading to the lower part of casing 6 which makes a tight contact with the inner casing 5 at each side, so as to divide the casing 6 into upper and lower chambers. At one end of the intermediate casing 6 a passage 11 is provided through which the exhaust gases may pass from the lower to the upper chamber in such casing, and the other end of the upper chamber of casing 6 is connected to a pipe 12 for carrying away the exhaust. With the above described construction, the exhaust receiving passages or chambers in casing 6 are surrounded by the air heating passages or chambers in the outer casing '4 and surround the air superheating passage or chamber in the inner casing 5. This construction insures maximum efiiciency in heating as the heat from the exhaust chambers can not pass directly to the outer air, but must pass either to the outer or to the inner air chamber, and the air after passing around the exhaust chamberv and being par-' tially heated by the heat which would otherwise be lost by radiation from the outer walls of the exhaust chamber, then passes to the superheating chamber wherein it is surrounded by the inner walls of the exhaust chamber and is thereby raised to a higher 1 temperature than is possible in the outer chamber, which is exposed to radiation on the outer side thereof.

In the operation of the apparatus, air is drawn from air inlet 8 through the lower air heating chamber in casing 4, the passage 8', the upper air heating chamber in casing 4,

passage 9, inner casing 5 and pipe 3 to the" carbureter. In passing through the air'heating chambers in casing 4 the air is heated and it is then superheated in passing through the inner casing 5, such heating being effected by the heat of the exhaust gases passlng through the passages in casing 6. The pre-heated air passes through the carbureter,

wherein it takes up fuel from the distributing device, the heated condition of the air insuring vaporization of such fuel, even when fuel of low volatility is used.

'What I claim is: I

An air pre-heater for internal combustion engines comprising an outer casing, an intermediate casing within the outer casing, partitions between the outer and intermediate casings dividing the space between-saidcasings into first and second air heating chambers, an lnner casing within the intermediate casing and constituting a superheating ohamher, and dividingthe space within the intermediate chamber into-firstand second ex H haust-receiving chambers, said first air heating chamber having an air inlet at one end and connecting at its other end with the second air heating chamber, and said superheating chamber having an outlet at one endand connecting. t its other end with;

the second heating chamber at the end communicating at its other end with the thereof which is remote from its point of first exhaust-receiving chamber. communication with the first air heating In testimony WhereofIhave hereunto sub- 10 chamber, said first exhaust-receiving chamscribed my name this 30th day of August, her having inlet means for receiving exhaust 1918.

gases and the second exhaust-receiving chamber having an outlet at one end and BENJAMIN B. BLOCK.